The Strategy of World Order, vol. 1: Toward a Theory of War Prevention, co-edited with Saul H. Mendlovitz, (World Law Fund, 1966).

The Strategy of World Order, vol. 2: International Law, co-edited with Saul H. Mendlovitz, (World Law Fund, 1966).

The Strategy of World Order, vol. 3: the United Nations, co-edited with Saul H. Mendlovitz, (World Law Fund, 1966).

The Strategy of World Order, vol. 4: Disarmament and Economic Development, co-edited with Saul H. Mendlovitz, (World Law Fund, 1966).

International Law and Organization: An Introductory Reader, co-edited with Wolfram F. Hanrieder, (J. B. Lippincott, 1968).

The Future of the International Legal Order, 4 vols., co-edited with Cyril E. Black, (Princeton University Press, 1969).

Crimes of War: A Legal, Political-documentary, and Psychological Inquiry into the Responsibility of Leaders, Citizens, and Soldiers for Criminal Acts in Wars, co-edited with Gabriel Kolko and Robert Jay Lifton, (Random House, 1971).